If you're logged in be default the ratings would be from your WoT, similar for the metadata on movies. I'm still working ratings aggregations, it works ATM, but it is bandwidth intensive.

I was chatting a bit with @ManiMe about data aggregation and the likelihood of services emerging that handle the computation, caching, and serving of important metrics like that for a small fee. I’m pretty sure the field is young, but I’m really excited to see where it goes!